Sfoglia categorie
Esplora
Fiverr Pro
Italiano
$
USD
I will build custom API integration and webhook system
Rezaul Karim
Informazioni su questo servizio
Are you struggling to connect two systems using APIs?
Need a reliable backend developer to build a custom integration?
I specialize in building secure, scalable API-to-API integrations using Python (FastAPI, Flask) and Node.js.
I can help you with:
Custom REST API development
Webhook implementation
ActiveCampaign & CRM integrations
OAuth / API key authentication
Data synchronization between platforms
Error handling & logging
PostgreSQL database integration
Debugging existing backend/API issues
This is NOT a Zapier-level quick setup. I build production-ready backend integrations with clean architecture and proper reliability.
My approach:
Review API documentation
Map data flow (contacts, transactions, events, tags, etc.)
Implement secure authentication
Handle retries & rate limits
Ensure reliable synchronization
If youre unsure which package fits your needs, send me a message first and Ill guide you.
Lets build a stable and scalable integration for your business.
Scopri di più su Rezaul Karim
Rezaul Karim
Full Stack Web Developer, Laravel, PHP, JavaScript, APIs
- DaBangladesh
- Membro daott 2014
Lingue
Bengali, Inglese
Hi, I’m Rezaul Karim, a professional Web Developer with experience building, customizing, and maintaining modern web applications. I specialize in PHP & Laravel development, RESTful APIs, and MySQL database design, delivering clean, scalable, and maintainable solutions.
My work includes Laravel & PHP development, backend services, API integration, bug fixing, performance optimization, and custom features based on client needs. I focus on clear communication, understanding requirements, and delivering production-ready results on time. Let’s build something reliable and scalable together.
Il mio portfolio
FAQ
Which platforms and APIs can you integrate?
I can integrate CRMs, marketing tools (ActiveCampaign, HubSpot), payment gateways, ticketing systems, SaaS platforms, and custom APIs. If the platform has REST API documentation, I can work with it.
What types of APIs do you work with?
I work with REST APIs, webhook-based systems, OAuth/API key authentication, and custom backend services. I can integrate most third-party SaaS platforms that provide API access.
Can you connect my software to another platform?
Yes. I build custom API-to-API integrations that connect your system with CRMs, marketing tools, payment platforms, or other third-party services securely and reliably.
